Opendoor Technologies Inc.

GameStop Corp.

Quotes of Opendoor Technologies, <a href="https://www.opendoor.com/">which runs</a>&nbsp;a&nbsp;platform for residential real estate in the U.S., <a href="https://finance.yahoo.com/quote/OPEN/">soared</a>&nbsp;nearly 43% yesterday, July 21, and are up more than 256% over the last five trading sessions. The stock has found a sudden fandom among retail traders and social-media platforms, <a href="https://www.bloomberg.com/news/articles/2025-07-21/opendoor-shares-swing-as-traders-flock-to-newest-meme-stock">writes</a>&nbsp;Bloomberg, and is "classic" example of a meme stock, says <i>Barron's</i>.&nbsp;

'Partying like it’s 1999': Opendoor having a meme-stock moment

The Goldman Sachs Group, Inc.

Risks remain high despite the S&P 500's rise, so it's better to invest in more stable companies, Wall Street says

Investors ignore analysts and take risks in the market: why is this happening?

CoreWeave, Inc.

Palantir Technologies Inc.

Shares of CoreWeave, a provider of cloud-based services for developing and training AI models, have soared 300% since March, while military and civilian AI developer Palantir is up more than 460% in 12 months. At the same time, their price/earnings multiples are highly inflated compared to companies in the S&amp;P 500 index. While retail investors are buying up both companies in the hope that they will repeat the fate of Nvidia, one of the main beneficiaries of the AI boom, such rapid growth is causing some analysts to compare them to so-called meme stocks. Are the risks justified and what is needed to make the growth sustainable?

Meme Stocks